So in my latest Game, I got trapped in the middle of the map, and for most of the game I had only 5 planets to my name. Two 12 Size, One 13 Size Gaia Planet, My Homeworld, and a 21. So I decided to play tall, since there was an abandoned Ring World two jumps over from my homeworld.
Things worked out pretty well actually. By Specializing my planets, I got a pretty good economy going, or at least enough that my neighbors thought twice about bothering me. Leveraging my Homeworld for Minerals, the Gaia Planet for Food, and turning one of the 12s into a Trade/Forge World Ecumenopolis, things where actually looking up in this barren region of space.
So of course, I'm going for the Habitats, so I can try them out in 2.2, and on paper, they seem like the perfect solution to my problems. If I cannot find any more habitable worlds in my borders, I'll build my own (with blackjack and hookers

). But I really couldn't be more wrong, since they solve none of my problems and actually wreck my empire's saving grace of its small sprawl footprint. The huge amount of research and unity from intelligent, then erudite, Technocrats gave me a fighting chance. But going hard on Habitats actually runs counter to this strength and instead of being able to put my foot on the gas, the Habitats start weighing me down, as they aren't really worth the investment for my mineral starved empire.
That really is the crux of the issue. When you are playing tall, the bottlenecks aren't research or trade, its minerals, and Habitats really do nothing to help there. Their huge expense aside, they don't help a tall empire turn that corner at all. So if Habitats are for a tall empire, I'd like them to solve a tall empire's problems, so they have a pay off that is worth the Ascension Perk. I think at least in that. game, picking anything else would have been better. And that's a shame, since the intuitive solution WAS the habitats, and its less than ideal when the intuitive solution is actually the worst option.